FDMT's three largest insider shareholders as of September 29, 2026 are Capital Management, L.P. Ra (TenPercentOwner, 4.56Mn shares), Global Investors Lp Viking (TenPercentOwner, 4.25Mn shares), David Schaffer (Director, 901.22K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Capital Management, L.P. Ra | TenPercentOwner | 0 | 4,563,211 | 4,563,211 | 42.7% | 10 Dec, 2024 |
| 2 | Global Investors Lp Viking | TenPercentOwner | 0 | 4,247,914 | 4,247,914 | 39.8% | 05 Jan, 2024 |
| 3 | David Schaffer | Director | 901,215 | 0 | 901,215 | 8.4% | 22 Oct, 2021 |
| 4 | David Kirn | Chief Executive Officer | 767,486 | 0 | 767,486 | 7.2% | 16 Sep, 2026 |
| 5 | Partners L P/Il Bvf | Other | 87,911 | 0 | 87,911 | 0.8% | 13 Nov, 2024 |
| 6 | Ashoo Gupta | Vp, Finance And Controller | 47,055 | 0 | 47,055 | 0.4% | 24 Mar, 2026 |
| 7 | Charles Theuer | Director | 41,684 | 0 | 41,684 | 0.4% | 16 Dec, 2025 |
| 8 | August J Moretti | Chief Financial Officer | 11,045 | 0 | 11,045 | 0.1% | 16 May, 2023 |
| 9 | Scott Bizily | Chief Legal Officer | 8,617 | 0 | 8,617 | 0.1% | 22 Sep, 2026 |
| 10 | Robert Young Kim | Chief Medical Officer | 1,043 | 0 | 1,043 | 0.0% | 07 Feb, 2024 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 16 Sep, 2026 | Scott Bizily | Chief Legal Officer | Acquired M | 1,635 | $4.14 | $6.77K | 10,252 | Direct |
| 16 Sep, 2026 | Scott Bizily | Chief Legal Officer | Disposed S | 1,635 | $13.65 | $22.32K | 8,617 | Direct |
| 16 Sep, 2026 | Scott Bizily | Chief Legal Officer | Disposed M | 1,635 | $0.00 | $0 | 58,066 | Direct |
| 01 Sep, 2026 | Scott Bizily | Chief Legal Officer | Acquired M | 584 | $6.49 | $3.79K | 9,201 | Direct |
| 01 Sep, 2026 | Scott Bizily | Chief Legal Officer | Disposed S | 584 | $14.00 | $8.18K | 8,617 | Direct |
| 01 Sep, 2026 | Scott Bizily | Chief Legal Officer | Disposed M | 584 | $0.00 | $0 | 2,959 | Direct |
| 19 Aug, 2026 | David Kirn | Director, Officer | Acquired M | 50,000 | $4.14 | $207.00K | 894,895 | Direct |
| 19 Aug, 2026 | David Kirn | Director, Officer | Disposed S | 43,149 | $15.36 | $662.62K | 851,746 | Direct |
| 19 Aug, 2026 | David Kirn | Director, Officer | Disposed S | 25,927 | $16.42 | $425.65K | 825,819 | Direct |
| 19 Aug, 2026 | David Kirn | Director, Officer | Disposed M | 50,000 | $0.00 | $0 | 217,500 | Direct |
| 13 Aug, 2026 | Scott Bizily | Chief Legal Officer | Acquired M | 1,635 | $4.14 | $6.77K | 10,252 | Direct |
| 13 Aug, 2026 | Scott Bizily | Chief Legal Officer | Disposed S | 1,635 | $12.00 | $19.62K | 8,617 | Direct |
| 17 Aug, 2026 | Scott Bizily | Chief Legal Officer | Acquired M | 1,635 | $4.14 | $6.77K | 10,252 | Direct |
| 17 Aug, 2026 | Scott Bizily | Chief Legal Officer | Disposed S | 1,635 | $12.20 | $19.95K | 8,617 | Direct |
| 13 Aug, 2026 | Scott Bizily | Chief Legal Officer | Disposed M | 1,635 | $0.00 | $0 | 61,336 | Direct |
| 17 Aug, 2026 | Scott Bizily | Chief Legal Officer | Disposed M | 1,635 | $0.00 | $0 | 59,701 | Direct |
| 04 Aug, 2026 | David Kirn | Director, Officer | Disposed S | 26,842 | $10.23 | $274.60K | 844,895 | Direct |
| 03 Aug, 2026 | David Kirn | Director, Officer | Disposed S | 12,415 | $10.05 | $124.72K | 871,737 | Direct |
| 09 Jul, 2026 | David Kirn | Director, Officer | Disposed S | 42,608 | $12.87 | $548.18K | 899,877 | Direct |
| 10 Jul, 2026 | David Kirn | Director, Officer | Disposed S | 15,283 | $12.01 | $183.56K | 884,594 | Direct |